The Software Concept
© PHYTEC Messtechnik GmbH 2011 L-740e_0
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3.4.3.2
Visualization Applications with Variable Lithting
If you have to work with changing lithting, you cannot avoid setting
some parameters automatically:
Shutter
and
Gain
usually have to be operated automatically. In this
case the dialog
Auto Exposure
offers the following two parameters
that you can use to influence the behavior of the Shutter/Gain
regulation.
Exposure Reference:
The presetting of this reference value for the
automatic lighting is 30. Do not change this value by more than 10.
Otherwise it could result in instabilities.
Backlight Correction:
If this parameter is set to
OFF
, then the
automatic exposure control measures the brightness value of the entire
image. If the lighting conditions between the various image portions
are considerably different, then you can compensate for this effect
with another method of measurement.
This enables you to limit the measuring range to the relevant picture
area.
Brightness:
Try to avoid using the automatic setting. It is better to
keep this value as low as possible. This guarantees the highest gray
value dynamic.
Sharpness:
Adjust the sharpness to achieve the desired picture effect.
As described in the previous section, the proper lens and its correct
connection can also be decisive for picture sharpness.
Gamma:
If you display the image on a tube monitor then Gamma
should be active. For most other cases Gamma should be shut off.
Select the setting that gives you the best image in your opinion.
Saturation:
For a „realistic“ picture, the deactivation of the color
saturation setting is recommend.
Otherwise values between 50 and 80 should deliver the best results.
